mpi/examples/Makefile.am: delete generated mod files

mpi/examples/Makefile.am

@@ -56,7 +56,7 @@ starpu_mpi_EXAMPLES =
 
 BUILT_SOURCES =
 
-CLEANFILES = *.gcno *.gcda *.linkinfo starpu_idle_microsec.log
+CLEANFILES = *.gcno *.gcda *.linkinfo starpu_idle_microsec.log *.mod
 
 EXTRA_DIST = 				\
 	mpi_lu/mpi_lu-float.h		\